Back in the golden age, the comics were not afraid to give the characters' ages. Sean Kleefeld pointed out that, in one of the letter columns in 1962, Stan Lee himself stated: "Mr. Fantastic and Ben Grimm are both in their late thirties, having graduated college when they were very young. Sue Storm is in her twenties, and Johnny is just seventeen. (We can't tell you Sue's EXACT age because, being a female, she'd never talk to us again!)"